Product Features 1: The shell is made of high hardness cast aluminum, which is durable and stronger. 2: It is not tiring to work for a long time and the human body is comfortable to hold 3: Forged alloy steel gun head, strong and durable, labor-saving and efficient 4: The handle is made of hard plastic, and the surface is non-slip, which is not easy to slip 5. The high-strength tie rod can better match the instructions of the gun drill 1: Adjust the electric drill to the appropriate speed 2: Open the chuck of the electric drill, insert the adapter joint and tighten the joint forward. 3: Turn on the reverse function of the electric drill until you hear the sound of "da da da", insert the suitable size rivet 4: Then activate the forward rotation function to align the punch hole and drive the rivet 5: activate the reverse function again and exit the rivet listing 1* riveted adapter 1 auxiliary handle 4* rivet heads 1* wrench